E1 STRENGTH IN LIGHT NUCLEI: SKYRME RPA ANALYSIS
2012 ◽
Vol 21
(05)
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pp. 1250041
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Keyword(s):
The giant dipole resonance (GDR) in N = 28 isotones (48 Ca , 50 Ti , 52 Cr , 54 Fe ) is analyzed in the framework of the Skyrme random-phase-approximation (RPA). Three Skyrme forces, SkM*, SLy6 and SV-bas, are used. The effects beyond RPA are simulated by the double folding procedure. We show that dipole strength exhibits a large collective shift, which testifies to a strong impact of the residual interaction and signals on considerable anharmonic effects. In 52 Cr , a significant pairing impact is found. For exception of 50 Ti , an acceptable agreement with the experiment data is obtained, which justifies the ability of Skyrme forces to describe GDR in light nuclei.
Keyword(s):
2001 ◽
Vol 692
(3-4)
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pp. 496-517
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Keyword(s):